It can be used as anticoagulant in vitro, such as blood transfusion, extracorporeal circulation, hemodialysis, peritoneal dialysis and blood samples in vitro test or anticoagulant treatment of equipment, etc.

　　It can be used to prevent and treat thrombosis or embolic diseases, such as myocardial infarction, thrombophlebitis, pulmonary embolism and so on.

　　It can be used for the treatment of disseminated intravascular coagulation, especially in the hypercoagulable stage, and can reduce the consumption of clotting factors.

　　Can be used for auxiliary treatment of acute myocardial infarction, reduce thromboembolism and other complications.

　　It can be used to prevent and treat embolism caused by catheters during arterial surgery and coronary angiography.

　　It can be used for high blood viscosity syndrome, prevent thrombosis, reduce the risk of cerebral thrombosis, and then reduce mortality.

　　The prophylactic use of heparin sodium is recommended for those at high risk of thrombosis.

　　It is effective for DIC in some diseases. Such as amniotic fluid embolism, stillbirth syndrome, abnormal blood transfusion reaction, fulminant purpura, sepsis, heat stroke and metastatic cancer, but the DIC caused by snake bite is not effective.

　　It can also be used as auxiliary drugs for respiratory diseases, such as copd, pulmonary embolism, pulmonary heart disease, respiratory failure, pneumonia, bronchial asthma, etc., which can reduce clinical symptoms and improve the cure rate.

　　It can also be used as an adjunctive drug for kidney diseases, such as chronic proliferative nephritis, membranous nephritis, focal glomerulosclerosis, lupus nephritis, pregnancy-induced toxemia nephropathy, hemolytic uremic syndrome, epidemic hemorrhagic fever anuria stage, nephrotic syndrome, acute renal failure, etc.

　　External heparin sodium ointment can also be used to treat early frostbite, chap, ulcer, eczema and superficial phlebitis and soft tissue injury.

　　Heparin sodium ointment can also treat pruritus vulvae.